Search results for "E-F"
showing 10 items of 836 documents
H2S: A Secure and Efficient Data Aggregative Retrieval Scheme in Unattended Wireless Sensor Networks
2009
In unattended wireless sensor networks, data are stored locally and retrieved on demand. To efficiently transmit the collector’s retrieval results, data are aggregated along being forwarded. The data confidentiality and integrity should be protected at the intermediate nodes. End-to-end encryption or hop-by-hop encryption based schemes are not efficient. Straightforward homomorphic encryption based scheme is not compromise resilient. To achieve all the desires, we propose a scheme - H2S by making use of both homomorphic secret sharing and homomorphic encryption. The security and efficiency of our scheme are justified by extensive analysis.
New folate-functionalized biocompatible block copolymer micelles as potential anti-cancer drug delivery systems
2006
Abstract The main objective of this study was to synthesize novel folic acid-functionalized diblock copolymer micelles and evaluate their solubilization of two poorly water-soluble anti-tumor drugs, tamoxifen and paclitaxel, which suffer from low water solubility and/or poor hydrolytic stability. The diblock copolymer consisted of a permanently hydrophilic block comprising 2-(methacryloyloxy)ethyl phosphorylcholine (MPC) residues and a pH-sensitive hydrophobic block comprising 2-(diisopropylamino)ethyl methacrylate (DPA) residues. Folic acid (FA) was conjugated to the end of the MPC block so that this group was located on the micelle periphery. Tamoxifen- and paclitaxel-loaded micelles were…
In the Shadows of a hypergraph: looking for associated primes of powers of squarefree monomial ideals
2018
The aim of this paper is to study the associated primes of powers of square-free monomial ideals. Each square-free monomial ideal corresponds uniquely to a finite simple hypergraph via the cover ideal construction, and vice versa. Let H be a finite simple hypergraph and J(H) the cover ideal of H. We define the shadows of hypergraph, H, described as a collection of smaller hypergraphs related to H under some conditions. We then investigate how the shadows of H preserve information about the associated primes of the powers of J(H). Finally, we apply our findings on shadows to study the persistence property of square-free monomial ideals and construct some examples exhibiting failure of contai…
Émergence, développement et contacts de la société Cerny en bassin d'Yonne - Point des connaissances et voies de recherche
1994
International audience
Stability of different mesoporous silica particles during an in vitro digestion
2016
Mesoporous silica materials have the ability to entrap drugs, nutrients and functional biomolecules and can be able to act as smart delivery systems capable to control and target the release of their cargo in a particular part of the gastrointestinal tract when administrated orally. However, the aptness of these encapsulation supports in in vivo oral controlled release relies on their chemical stability through the digestive tube. In this context, we have evaluated the stability of four different mesoporous silica particles, frequently used as encapsulating supports, during an in vitro digestion process comprising buccal, stomach and intestinal phases. Results showed that after 4 h of diges…
Une sépulture exceptionnelle du début du Bronze final à La Saulsotte (Aube)
2017
International audience
Les périurbains franciliens : stratégies résidentielles, tactiques du quotidien et résistance des modes d'habiter
2010
Révéler les mobilités ordinaires et touristiques en Ile-de-France à partir de données de téléphones portables
2015
International audience; Les villes sont bousculées par trois grandes révolutions en cours, qui vont les transformer durablement. La transition écologique contraint chacune à économiser les ressources, et à trouver les moyens d’assurer à toutes les populations une meilleure qualité de vie au quotidien. La mondialisation soumet toutes les villes à des restructurations économiques sous l’impulsion de transferts financiers de plus en plus rapides. Les technologies numériques bouleversent tout autant les modes de vie et de gestion de la ville que les conditions de production et d’interprétation des informations.En décryptant de nouvelles données urbaines, diverses et massives, cet ouvrage montre…
La forêt et son évolution dans le paysage francilien
2011
International audience